对于错误：
[Fatal Error] test.xml:1:7: The processing instruction target matching "[xX][mM][lL]" is not allowed.org.xml.sax.SAXParseException: The processing instruction target matching "[xX][mM][lL]" is not allowed. at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:264) at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:292) at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:172) at TestXML.XmlDemo(TestXML.java:98) at TestXML.main(TestXML.java:129)[Fatal Error] test.xml:1:7: The process
